Well, for you Surface Book users there doesn't seem to be a problem but for us Surface 3 or Surface Pro 4 users there is. So I guess this is hardware specific to Windows 10.

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I don't really get that... Why would this be a bigger issue for Surface 3 (Pro) and Surface Pro 4 users? I always use the cursor keys combined with the Windows key or just drag the window to the side.
The only reason for me to test the taskbar method is because you as a fellow Surface owner were having an issue